The burks no negative frequency constant pressure water supply equipment

The booster water supply system combines AC variable-frequency speed regulation technology with automatic control technology to form an advanced and reliable automatic pump unit. This system can be widely used in a variety of pressurization and circulation systems, such as domestic water pressurization, solar / air-source hot water pressurization, boiler feed water systems and industrial constant-pressure circulation, and can keep the water supply pressure stable at the required set value.

● Control accuracy up to 1% bar
● Innovative energy-saving shutdown algorithm for more reliable control
● Shortcut key operation, everything easy to master
● Spare pump interface, making system upgrades possible
● Remote monitoring, in line with the automated building design concept
● Strict system life testing to ensure the pump unit is reliable and stable
● When there is no water at the inlet, the pump is automatically protected against damage
● Complete dry-running protection and fault handling

The non-negative-pressure constant-pressure variable-frequency water supply equipment is connected directly in series with the municipal water network. It mainly consists of pump units, a steady-flow tank, a vacuum suppressor, a variable-frequency control cabinet, a pressure sensor and pipeline valves. During operation it uses the existing pressure of the water network for superimposed pressurized supply, and the steady-flow tank and vacuum suppressor ensure that no negative pressure is generated in the network and neighbouring users are not affected while the equipment draws water. Compared with traditional water supply using a ground tank or roof tank, no separate water storage facility is needed, which reduces the risk of secondary water contamination.

The equipment inlet is connected directly to the municipal water network. A pressure sensor on the outlet network continuously detects the supply pressure and feeds the signal back to the variable-frequency controller; the controller compares the actual pressure with the set pressure and, through PID regulation, adjusts the drive output frequency and pump speed to superimpose pressure on top of the existing network pressure: the pumps speed up to boost supply as consumption increases and slow down as it decreases. At small flow or no demand the system enters a sleep state, and restarts automatically when the network pressure drops to the wake-up condition. The whole process runs in a fully closed manner, keeps the supply pressure stable, and never generates negative pressure in the inlet network.

Constant-pressure supply: closed-loop pressure control keeps the supply pressure stable at the required set value, with small pressure fluctuation as consumption changes.
Energy saving: the drive adjusts the pump speed automatically according to actual water consumption, and works with an energy-saving shutdown (sleep) algorithm, so the system uses only the energy the demand requires.
Complete protection: automatic protection against inlet water shortage, dry-running protection and fault handling protect the pump from damage in abnormal conditions.
Easy operation: shortcut key operation makes parameter setting and running status clear at a glance.
Expandable and monitorable: a spare pump interface is reserved for convenient system upgrades, and remote monitoring is supported for use with automated building systems.

Suitable for secondary pressurized water supply where municipal tap water is the source and the network pressure can be used, such as water supply systems of new projects including residential communities, high-rise buildings, hotels, hospitals and schools, as well as renovation of water supply in old residential areas, solar / air-source hot water pressurization, boiler feed water and industrial constant-pressure circulation.